vsk created this revision. vsk added reviewers: JDevlieghere, kastiglione, kledzik. vsk requested review of this revision.
In macOS 12, dyld switched to using chained fixups. As a result, all symbols are bound at launch and there are no lazy pointers any more. Since we wish to import/dlopen() a dylib with missing symbols, we need to use a weak import. This applies to all macOS 12-aligned OS releases, e.g. iOS 15, etc. rdar://81295101 https://reviews.llvm.org/D112034 Files: lldb/test/API/functionalities/load_lazy/Makefile Index: lldb/test/API/functionalities/load_lazy/Makefile =================================================================== --- lldb/test/API/functionalities/load_lazy/Makefile +++ lldb/test/API/functionalities/load_lazy/Makefile @@ -5,9 +5,20 @@ include Makefile.rules +ifeq "$(OS)" "Darwin" + # In macOS 12, dyld switched to using chained fixups. As a result, all + # symbols are bound at launch and there are no lazy pointers any more. + # Since we wish to import/dlopen() a dylib with missing symbols, we need + # to use a weak import. This applies to all macOS 12-aligned OS releases, + # e.g. iOS 15, etc. + LINKFLAGS := "-Wl,-weak-lt2_0" +else + LINKFLAGS := "-lt2_0" +endif + t1: t2_0 $(MAKE) VPATH=$(SRCDIR) -f $(MAKEFILE_RULES) \ - DYLIB_ONLY=YES DYLIB_C_SOURCES=t1.c DYLIB_NAME=t1 LD_EXTRAS="-L. -lt2_0" + DYLIB_ONLY=YES DYLIB_C_SOURCES=t1.c DYLIB_NAME=t1 LD_EXTRAS="-L. $(LINKFLAGS)" t2_0: $(MAKE) VPATH=$(SRCDIR) -f $(MAKEFILE_RULES) \
Index: lldb/test/API/functionalities/load_lazy/Makefile =================================================================== --- lldb/test/API/functionalities/load_lazy/Makefile +++ lldb/test/API/functionalities/load_lazy/Makefile @@ -5,9 +5,20 @@ include Makefile.rules +ifeq "$(OS)" "Darwin" + # In macOS 12, dyld switched to using chained fixups. As a result, all + # symbols are bound at launch and there are no lazy pointers any more. + # Since we wish to import/dlopen() a dylib with missing symbols, we need + # to use a weak import. This applies to all macOS 12-aligned OS releases, + # e.g. iOS 15, etc. + LINKFLAGS := "-Wl,-weak-lt2_0" +else + LINKFLAGS := "-lt2_0" +endif + t1: t2_0 $(MAKE) VPATH=$(SRCDIR) -f $(MAKEFILE_RULES) \ - DYLIB_ONLY=YES DYLIB_C_SOURCES=t1.c DYLIB_NAME=t1 LD_EXTRAS="-L. -lt2_0" + DYLIB_ONLY=YES DYLIB_C_SOURCES=t1.c DYLIB_NAME=t1 LD_EXTRAS="-L. $(LINKFLAGS)" t2_0: $(MAKE) VPATH=$(SRCDIR) -f $(MAKEFILE_RULES) \
_______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
